Name: Pseudoramibacter alactolyticus (Prévot and Taffanel 1942) Willems and Collins 1996

Category: Species

Proposed as: comb. nov.

Basonym: "Ramibacterium alactolyticum" Prévot and Taffanel 1942

Etymology: a.lac.to.ly’ti.cus. Gr. pref. a-, not (inseparable prefix); L. neut. n. lac (gen. lactis), milk; N.L. masc. adj. lyticus, able to loose, able to dissolve; from Gr. masc. adj. lytikos, dissolving; N.L. masc. adj. alactolyticus, not milk digesting

Pronunciation, gender: a-lak-to-LY-ti-kus, masculine

Type strain: ATCC 23263; CIP 106365; DSM 3980; JCM 6480

Conduct genome-based taxonomy at

16S rRNA gene: AB036759 Analyse FASTA

Valid publication: Willems A, Collins MD. Phylogenetic relationships of the genera Acetobacterium and Eubacterium sensu stricto and reclassification of Eubacterium alactolyticum as Pseudoramibacter alactolyticus gen. nov., comb. nov. Int J Syst Bacteriol 1996; 46:1083-1087. 🇬🇧

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 46, part 4 of the IJSB. Int J Syst Bacteriol 1997; 47:243-244.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 2

• Synonyms:

  • Name	Kind
    Eubacterium alactolyticum (Prévot and Taffanel 1942) Holdeman and Moore 1970 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    "Ramibacterium alactolyticum" Prévot and Taffanel 1942	homotypic synonym, not validly published, basonym of name in Approved Lists

• Notes:
  • 🥇 Nomenclatural type of the genus Pseudoramibacter Willems and Collins 1996. Publication: Willems A, Collins MD. Phylogenetic relationships of the genera Acetobacterium and Eubacterium sensu stricto and reclassification of Eubacterium alactolyticum as Pseudoramibacter alactolyticus gen. nov., comb. nov. Int J Syst Bacteriol 1996; 46:1083-1087. 🇬🇧
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human pathogen". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 42 times in PubMed until 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 According to Bartlett et al. (2022), this species is an established human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧
  • 🧍 According to Ludwig et al. (2021), this "species falls within the genus Eubacterium, and should be classified in this taxon". Publication: Ludwig W, Viver T, Westram R, Francisco Gago J, Bustos-Caparros E, Knittel K, Amann R, Rossello-Mora R. Release LTP_12_2020, featuring a new ARB alignment and improved 16S rRNA tree for prokaryotic type strains. Syst Appl Microbiol 2021; 44:126218. 🇪🇸

Parent taxon: Pseudoramibacter Willems and Collins 1996

Assigned by: Willems A, Collins MD. Phylogenetic relationships of the genera Acetobacterium and Eubacterium sensu stricto and reclassification of Eubacterium alactolyticum as Pseudoramibacter alactolyticus gen. nov., comb. nov. Int J Syst Bacteriol 1996; 46:1083-1087. 🇬🇧

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Record number: 780192